Improvement in tire-shrinking machines



`UNITED STATES PATENT OFFICE.

GIDEON HUNTINGTON, OF ALMONT, MICHIGAN.

IMPROVEMENT IN TIRE-SHRINKING MACHINES.

Specification forming part of Letters Patent No. 57,14 l, dated August 14, 1866.

To all whom it may concern:

Be it known that I, GrDEoN HUNTINGTON, of Almont, county of La Peer, State of Michigan, have invented a new and Improved Upsetting-Machine for shortening the tires of the wheels of carriages, wagons, and other vehicles, and upsetting other irons; and I do hereby declare that the following is a full, clear, andeXact description of the construetion and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l is a perspective view of machine. Figs. 2 and 3 are transverse sections of movable heads; Fig. 4, perspective view of platform; Fig. 5, perspective of wheel and eccentric threads; Fig. 6, perspective of rest or support for straight irons.

The machine consists of the platform A A, on which are placed two movable heads, B B, and at each end and at the sides are the guides J J, on which the heads are made to slide, and on the center and at either side are the guides vC C, for the front of the heads to slide into. In the center of said platform is asink sufficient to receive the wheel L, through the axle of which is a mortise to receive the lever below the platform; and on the top of said wheel, and cast inthe same piece, are the eccentric threads G G, which are so placed as to mesh between the segments H H and the cogs I I, which are on the bottom and cast in the saine piece with the heads B B, as shown in Figs. 2 and 3.

On the top of each head are two loops forming beveled mortises, and placed suciently far apart to allow of any ordinary tire to be placed between them. In those mortises are fitted two keys or wedges, so that the upper edges of them turn upon the upper or smaller part of the mortises as upon a hinge, while the lower edges have the widest part of the mortises in which to play.

The block E is a cast-iron piece with a convex bottom to iit the concave surface of the heads, While the top is-provided with grooves to suit square or round irons.

The action of this machine is as follows The heads B B are driven apart by turning the wheel-L, on which are the eccentric threads G G, by means of the lever K until the threads present Vtheir largest diameter toward and against the cogs I I. The tire is then heated and placed between the loops D D. The keys or wedges F F are then shoved into the mortises in such a manner that when the ,upper edge iits into the upper part of said mortises the lower edge presses down upon the inner surface of the tire at the frontcorner of said mortises, thus holding it firmly where it is placed. The wheel L is then turned by means of the lever K, so that the eccentric threads present a smaller diameter against the segments H H, thus drawing said heads together, and the tire is thus shortened or upset to the desired size as it is held by the keys or wedges, as above described.

If it is desired to upset a straight piece, I

place the block E on the center of the machine for a rest or support to prevent its bending into the circle of the machine.

What I claim, and desire to secure by Letters Patent, is substantially as follows:

The combination of the platform A A, movable heads B B, wheel L, with eccentric threads G G, segments H H, cogs I I, and block E,

with the loops or beveled lnortises and self-- acting keys, when made and used as above described, and for the purpose herein set forth.

A. R. STONE, E. W. GOEEY. 

